查看MySQL主从复制的命令执行情况

发布时间：2023-08-26 15:02:43 所属栏目：MySql教程来源：

导读：下文内容主要给大家带来mysql主从复制命令执行过程，这里所讲到的知识，与书籍略有不同，都是亿速云专业技术人员在与用户接触过程中，总结出来的，具有一定的经验分享价值，希望给广大读者带来帮助。

我这里用do

下文内容主要给大家带来mysql主从复制命令执行过程，这里所讲到的知识，与书籍略有不同，都是亿速云专业技术人员在与用户接触过程中，总结出来的，具有一定的经验分享价值，希望给广大读者带来帮助。

我这里用docker镜像生成的两个容器，所以会导致主从复制失败：主从的uuid（UUID 是通用唯一识别码）相同。

mysql主从复制命令执行过程

mysql> stop slave;

Query OK, 0 rows affected (0.01 sec)

mysql> CHANGE MASTER TO MASTER_HOST='172.18.0.201',

    -> MASTER_PORT=3306,

    -> MASTER_USER='rep',

    -> MASTER_PASSWORD='123',

    -> MASTER_LOG_FILE='binlog.000003',

    -> MASTER_LOG_POS=404;

Query OK, 0 rows affected, 2 warnings (0.05 sec)

mysql> start slave;

Query OK, 0 rows affected (0.01 sec)

mysql> show slave status\G;

*************************** 1. row ***************************

               Slave_IO_State:

                  Master_Host: 172.18.0.201

                  Master_User: rep

                  Master_Port: 3306

                Connect_Retry: 60

              Master_Log_File: binlog.000003

          Read_Master_Log_Pos: 404

               Relay_Log_File: mysqld-relay-bin.000001

                Relay_Log_Pos: 4

        Relay_Master_Log_File: binlog.000003

             Slave_IO_Running: No

            Slave_SQL_Running: Yes

              Replicate_Do_DB:

          Replicate_Ignore_DB:

           Replicate_Do_Table:

       Replicate_Ignore_Table:

      Replicate_Wild_Do_Table:

  Replicate_Wild_Ignore_Table:

                   Last_Errno: 0

                   Last_Error:

                 Skip_Counter: 0

          Exec_Master_Log_Pos: 404

              Relay_Log_Space: 120

              Until_Condition: None

               Until_Log_File:

                Until_Log_Pos: 0

           Master_SSL_Allowed: No

           Master_SSL_CA_File:

           Master_SSL_CA_Path:

              Master_SSL_Cert:

            Master_SSL_Cipher:

               Master_SSL_Key:

        Seconds_Behind_Master: NULL

Master_SSL_Verify_Server_Cert: No

                Last_IO_Errno: 1593

                Last_IO_Error: Fatal error: The slave I/O thread stops because master and slave have equal MySQL s                             erver UUIDs; these UUIDs must be different for replication to work.

               Last_SQL_Errno: 0

               Last_SQL_Error:

  Replicate_Ignore_Server_Ids:

             Master_Server_Id: 1

                  Master_UUID:

             Master_Info_File: /var/lib/mysql/master.info

                    SQL_Delay: 0

          SQL_Remaining_Delay: NULL

      Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it

           Master_Retry_Count: 86400

                  Master_Bind:

      Last_IO_Error_Timestamp: 190614 11:55:05

     Last_SQL_Error_Timestamp:

               Master_SSL_Crl:

           Master_SSL_Crlpath:

           Retrieved_Gtid_Set:

            Executed_Gtid_Set:

                Auto_Position: 0

1 row in set (0.00 sec)

ERROR:

No query specified

mysql>

slave：

[root@e915630786b3 log]# cat /var/lib/mysql

mysql/       mysql-files/

[root@e915630786b3 log]# cat /var/lib/mysql/auto.cnf

[auto]

server-uuid=c9db6142-8bfd-11e9-b3b7-0242ac110002

master：

[root@3b7cfc77f2b8 /]# cat /var/lib/mysql/auto.cnf

[auto]

server-uuid=c9db6142-8bfd-11e9-b3b7-0242ac110002

slave：

[root@e915630786b3 log]# rm -rf /var/lib/mysql/auto.cnf

[root@e915630786b3 log]# systemctl restart mysql

[root@e915630786b3 log]# cat /var/lib/mysql/auto.cnf

[auto]

server-uuid=c6f8e6d0-8e9b-11e9-84c9-0242ac1200ca

重新执行一遍主从复制命令即可。

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